Pfeiffer Vacuum

4.5.3.2 Accessories

Particle filter (IPF)

If process-related dusts and particles are present, the pump must be fitted with an upstream particle filter to prevent the pump from becoming blocked. There are various types available to fit the connection flange on the pump. The effective filter mesh is 25 µm. Other filter types and mesh sizes are available on request.

Silencer (ES)

The silencer ES 25S on the outlet side reduces the noise level of the pump particularly at high working pressures near to atmospheric pressure. It does not have any influence on the noise level of the pump near the ultimate pressure.

Sound protection hoods (NRC and SEK)

Sound protection hoods reduce the sound pressure level of the ACP pumps even at operating pressures close to the ultimate pressure. Type NRC hoods reduce the sound pressure by about 5 to 6 dB(A) and limit the maximum ambient temperature to 35 °C. Hoods of type SEK reduce the sound pressure by about 10 dB(A) and limit the maximum ambient temperature to 30 °C.

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